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Groups > sci.physics.relativity > #426460
| Newsgroups | sci.physics.relativity |
|---|---|
| Date | 2017-07-28 11:31 -0700 |
| References | <4ac230b6-744f-44dc-8b16-ef97cdd60872@googlegroups.com> |
| Message-ID | <c753f82e-e468-4686-b7c8-14d6d1bb35ef@googlegroups.com> (permalink) |
| Subject | Re: Einsteinians Fool the Gullible World |
| From | JanPB <filmart@gmail.com> |
On Thursday, July 6, 2017 at 11:26:18 PM UTC-7, Pentcho Valev wrote: > Don Koks, Steve Carlip, Philip Gibbs: "In 1879 it was thought that light must propagate through a medium in space, the ether, just as sound propagates through the air and other substances. The two scientists Michelson and Morley set up an experiment to attempt to detect the ether, by observing relative changes in the speed of light as Earth changed its direction of travel relative to the sun during the year. To their surprise, they failed to detect any change in the speed of light." http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/speed_of_light.html > > Brothers Einsteinians Don Koks, Steve Carlip and Philip Gibbs are lying blatantly. Initially, the Michelson-Morley experiment UNEQUIVOCALLY confirmed the variable speed of light posited by Newton's emission theory of light; later Lorentz and FitzGerald introduced ad hoc idiocies - length contraction etc. - confused everything and paved the way for Einstein's science killing "theory": "science-killing theory" - hahahahahahahaha!!! First of all, you are bringing up Michelson-Morley incorrectly. The motivation for Einstein's theory was the fact that Maxwell's equations did not work if one transformed from the "lab" coordinate system to a system that moved with constant velocity wrt. the "lab". That inconsistency is present already e.g. in the very foundation of magnetism: the law of Biot-Savart and the Lorentz force formula yield contradictory predictions when so transformed. This was not a fatal contradiction per se, just a strange situation which implied the "lab" system was physically different from all the others. But Newtonian mechanics is NOT similarly affected despite the macroscopic forces _it_ describes being derivable from electromagnetic phenomena. So somewhere along the way to mechanics, electromagnetic forces "forget" that the "lab" coordinates are privileged. There was nothing at all indicating what would be the cause of such "forgetting". So this was the strange situation compounded by the weird mathematical discovery that a coordinate system change _did_ exist which _did_ preserve Maxwell's equations. But this coordinate change included a change of _time_ as well (not to mention certain spatial extents). Everyone assumed this "time" was just an abstract parameter but Einstein decided to investigate if there was a way to assign an actual physical meaning to the "transformed time" based on some sort of reasonable and minimal set of assumptions or principles. He succeeded in finding such a principle, it's essentially the following: the _round trip_ of a light signal (source-mirror-source) yields the speed c in all uniformly moving systems when tested at some _single_ point fixed in each such system. Notice clock sync doesn't enter into it. But when one does set up actual coordinate systems designed to mimic Newtonian setup, then Einstein shows one can _derive_ the above transformations preserving Maxwell's equations from the above principle (and some other widely accepted assumptions). As a corollary, that odd "abstract time parameter" gains the status of the actual physical time that the transformed observer experiences. The presence of the coordinate systems also allows one certain useful quantifications called "time dilation", "the relativity simultaneity", etc. Almost certainly Einstein was at the time unaware of Michelson-Morley. -- Jan
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Einsteinians Fool the Gullible World Pentcho Valev <pvalev@yahoo.com> - 2017-07-06 23:26 -0700
Re: Einsteinians Fool the Gullible World Gary Harnagel <hitlong@yahoo.com> - 2017-07-07 06:01 -0700
Re: Einsteinians Fool the Gullible World Ocho Hoshouwa <yeoh@eohotwa.ey> - 2017-07-08 11:16 +0000
Re: Einsteinians Fool the Gullible World Pentcho Valev <pvalev@yahoo.com> - 2017-07-07 06:29 -0700
Re: Einsteinians Fool the Gullible World Gary Harnagel <hitlong@yahoo.com> - 2017-07-07 06:47 -0700
Re: Einsteinians Fool the Gullible World kenseto <setoken@att.net> - 2017-07-07 08:04 -0700
Re: Einsteinians Fool the Gullible World Gary Harnagel <hitlong@yahoo.com> - 2017-07-07 08:15 -0700
Re: Einsteinians Fool the Gullible World kenseto <setoken@att.net> - 2017-07-28 07:17 -0700
Re: Einsteinians Fool the Gullible World moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-07-28 17:11 +0000
Re: Einsteinians Fool the Gullible World Jeèným Hová <hovae@ieuuio.org> - 2017-07-29 15:51 +0000
Re: Einsteinians Fool the Gullible World Odd Bodkin <bodkinodd@gmail.com> - 2017-07-31 09:00 -0500
Re: Einsteinians Fool the Gullible World kenseto <setoken@att.net> - 2017-07-31 12:43 -0700
Re: Einsteinians Fool the Gullible World moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-08-01 14:20 +0000
Re: Einsteinians Fool the Gullible World Odd Bodkin <bodkinodd@gmail.com> - 2017-08-02 10:38 -0500
Re: Einsteinians Fool the Gullible World Pentcho Valev <pvalev@yahoo.com> - 2017-07-08 01:10 -0700
Re: Einsteinians Fool the Gullible World Gary Harnagel <hitlong@yahoo.com> - 2017-07-08 06:23 -0700
Re: Einsteinians Fool the Gullible World Ocho Hoshouwa <yeoh@eohotwa.ey> - 2017-07-08 13:35 +0000
Re: Einsteinians Fool the Gullible World JanPB <filmart@gmail.com> - 2017-07-28 11:31 -0700
Re: Einsteinians Fool the Gullible World Exandre Bertrand <aeid@xani.pr> - 2017-07-29 09:26 +0000
Re: Einsteinians Fool the Gullible World JanPB <filmart@gmail.com> - 2017-07-29 13:44 -0700
Re: Einsteinians Fool the Gullible World Jeèným Ludnými <hovae@ieuuio.org> - 2017-07-29 21:03 +0000
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